/*
 * Copyright 2020 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.android.exoplayer2.transformer;

import com.google.android.exoplayer2.decoder.DecoderInputBuffer;

/** A sample transformer for a given track. */
/* package */ interface SampleTransformer {

  /**
   * Transforms the data and metadata of the sample contained in {@code buffer}.
   *
   * @param buffer The sample to transform. If the sample {@link DecoderInputBuffer#data data} is
   *     {@code null} after the execution of this method, the sample must be discarded.
   */
  void transformSample(DecoderInputBuffer buffer);
}
